<template>
  <div>
    <!-- 底部滚动区域 -->
    <div id="slider" class="mui-slider">
				<div id="sliderSegmentedControl" class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted">
					<div class="mui-scroll">
						<a :class="['mui-control-item', item.id == 0 ? 'mui-active' : '']" v-for="item in cates" :key="item.id">
							{{item.title}}
						</a>
					</div>
				</div>
			</div>

      <!-- 图片列表区域 -->
      <ul class="photo-list">
        <router-link v-for="item in list" :key="item.id" :to="'/home/photoinfo/' + item.id" tag="li">
          <img v-lazy="item.img_url">
          <div class="info">
            <h1 class="info-title">{{item.title}}</h1>
            <div class="info-body">{{item.zhaiyao}}</div>
          </div>
        </router-link>
      </ul>
  </div>
</template>
<script>
import mui from "../../lib/mui/js/mui.min.js";
export default {
  data() {
    return {
      cates: [],  //所有分类的列表数据
      list: []  //图片列表的数组
    }
  },
  created() {
    this.getAllCategory();
    this.getPhotoListByCateId(0)
  },
  mounted() {
    mui('.mui-scroll-wrapper').scroll({
      deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
    });
  },
  methods: {
    getAllCategory() {
      //获取所有的图片分类
      this.$http.get("api/getimgcategory").then(result => {
        if(result.body.status === 0) {
          //手动拼接出一个最完整的分类列表
          result.body.message.unshift({title: "全部", id: 0 });
          this.cates = result.body.message;
        }
      })
    },
    getPhotoListByCateId(cateId) {
      //根据 分类id，获取图片列表
      this.$http.get("api/getimages/" + cateId).then(result => {
        if (result.body.status === 0) {
          this.list = result.body.message;
        }
      });
    }
  }
}
</script>
<style lang="scss" scoped>
* { touch-action: pan-y; } 

.photo-list {
  list-style: none;
  margin: 0;
  padding: 10px;
  padding-bottom: 0;
  li {
    background-color: #ccc;
    text-align: center;
    margin-bottom: 10px;
    box-shadow: 0 0 9px #999;
    position: relative; 
    img {
      width: 100%;
      vertical-align: middle;
    }
    img[lazy="loading"] {
      width: 40px;
      height: 300px;
      margin: auto;
    }
    .info {
      color: white;
      text-align-last: left;
      position: absolute;
      bottom: 0;
      background-color: rgba(0, 0, 0, .4);
      max-height: 84px;
      .info-title {
        font-size: 14px;
      }
      .info-body {
        font-size: 13px;
      }
    }
  }
}
</style>
